Provided is an output section that outputs data to outside; a condition storage section that stores an abnormal condition showing at least one of a characteristic of data to be outputted from the output section by means of malicious software and a characteristic of an operational pattern of the output section that results when the malicious software outputs data; and an output control section that prohibits output of data when at least one of a characteristic of data to be outputted from the output section and a characteristic of an operational pattern of the output section satisfies the abnormal condition.